A noval novel technique is described for high speed color conversions for JPEG-compressed images. The color conversion is processed in the transform domain instead of the traditional spatial domain. Only the input DC coefficients of the multiple color components are processed through
the traditional table lookup to create output DC coefficients. Given each output color component's DC value, the linearity of its 63 AC coefficients is determined and their transform domain scaling functions are looked up in a 1-D table as a function of only the component output DC term.
For n-dimensional input color space to m-dimensional output color space conversion, n component blocks create m output blocks. These blocks can be inverse DCTed to create spatial domain data or requantized and entropy encoded to create JPEG compressed data. Abort criteria also have been developed
to determine when the traditional spatial domain interpolation needs to be done.

No Reference information available - sign in for access.

No Citation information available - sign in for access.

No Supplementary Data.

No Article Media

No Metrics

Document Type: Research Article

Publication date: 2007-01-01

More about this publication?

For more than 30 years, IS&T's series of digital printing conferences have been the leading forum for discussion of advances and new directions in 2D and 3D printing technologies. A comprehensive, industry-wide conference that brings together industry and academia, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems?particularly those involved with additive manufacturing and fabrication?including bio-printing, printed electronics, page-wide, drop-on-demand, desktop and continuous ink jet, toner-based systems, and production digital printing, as well as the engineering capability, optimization, and science involved in these fields. In 2016, the conference changed its name formally to Printing for Fabrication to better reflect the content of the meeting and the evolving technology of printing.

Please note: For purposes of its Digital Library content, IS&T defines Open Access as papers that will be downloadable in their entirety for free in perpetuity. Copyright restrictions on papers vary; see individual paper for details.